How long do A/C and heating units typically last?

I have a condenser that is up on the rough, and I think everything else is working, so I need to replace the unit. You need to come out and look out and take the unit up to another apartment. Can you give me a ballpark figure of when you can come out and do it? You want to come and take a look at it? What's your procedure?

What is the average length of curtains?

why would service ice flash after being reset on sub zero refrigerator

How do I reset my prepaid electricity meter?

Where is the reset button on Kenmore Elite ice maker, model 106.51773510?

Why does my dryer vent require cleaning?

Our heater stopped working at the house, so I was checking to see about having someone come out to check out and find out why it's doing this to me. It stopped blowing air. I turned it off last night or put it down really low last night. And then I went and came back this morning, turned it up to 70° to heat the house, and it's not turning on at all. I flipped all the breakers, and still not turning on. The AC is not turning either on the central heating and HVAC unit. The HVAC unit is Trane and it’s located on the roof.

Is it worth upgrading to a multi-zone Bryant ductless system for customized heating and cooling in different areas of my home?

Is it worth exploring the capabilities of the Carrier i-Vu® building automation system for centralized control and energy management in my building?

Does AutoZone do diagnostics for free?